mirror of https://github.com/python/cpython
71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
"""macresource - Locate and open the resources needed for a script."""
|
|
|
|
from Carbon import Res
|
|
import os
|
|
import sys
|
|
|
|
class ArgumentError(TypeError): pass
|
|
class ResourceFileNotFoundError(ImportError): pass
|
|
|
|
def need(restype, resid, filename=None, modname=None):
|
|
"""Open a resource file, if needed. restype and resid
|
|
are required parameters, and identify the resource for which to test. If it
|
|
is available we are done. If it is not available we look for a file filename
|
|
(default: modname with .rsrc appended) either in the same folder as
|
|
where modname was loaded from, or otherwise across sys.path.
|
|
|
|
Returns the refno of the resource file opened (or None)"""
|
|
|
|
if modname is None and filename is None:
|
|
raise ArgumentError, "Either filename or modname argument (or both) must be given"
|
|
|
|
if type(resid) is type(1):
|
|
try:
|
|
h = Res.GetResource(restype, resid)
|
|
except Res.Error:
|
|
pass
|
|
else:
|
|
return None
|
|
else:
|
|
try:
|
|
h = Res.GetNamedResource(restype, resid)
|
|
except Res.Error:
|
|
pass
|
|
else:
|
|
return None
|
|
|
|
# Construct a filename if we don't have one
|
|
if not filename:
|
|
if '.' in modname:
|
|
filename = modname.split('.')[-1] + '.rsrc'
|
|
else:
|
|
filename = modname + '.rsrc'
|
|
|
|
# Now create a list of folders to search
|
|
searchdirs = []
|
|
if modname == '__main__':
|
|
# If we're main we look in the current directory
|
|
searchdirs = [os.curdir]
|
|
if sys.modules.has_key(modname):
|
|
mod = sys.modules[modname]
|
|
if hasattr(mod, '__file__'):
|
|
searchdirs = [os.path.split(mod.__file__)[0]]
|
|
if not searchdirs:
|
|
searchdirs = sys.path
|
|
|
|
# And look for the file
|
|
for dir in searchdirs:
|
|
pathname = os.path.join(dir, filename)
|
|
if os.path.exists(pathname):
|
|
break
|
|
else:
|
|
raise ResourceFileNotFoundError, filename
|
|
|
|
refno = Res.FSpOpenResFile(pathname, 1)
|
|
|
|
# And check that the resource exists now
|
|
if type(resid) is type(1):
|
|
h = Res.GetResource(restype, resid)
|
|
else:
|
|
h = Res.GetNamedResource(restype, resid)
|
|
return refno |